Display panel or portion thereof with graphical user interface



FIG. 1 is a front-view of a display panel or portion thereof with graphical user interface in a first embodiment showing our new design; and,

FIG. 2 is a front-view thereof in a second embodiment.

The broken lines shown in the drawings represent portions of the display panel or portion thereof with graphical user interface that do not form a part of the claimed design. 

CLAIM The ornamental design for a display panel or portion thereof with graphical user interface, as shown and described. 